Three-times Olympic gold medallist Shelly-Ann Fraser-Pryce has shown no mercy during her son Zyon's sports day, storming to victory in the parents' 100 metres race and leaving fellow mums in her wake again.

Jamaica's 38-year-old eight-times Olympic medallist lined up for the mum's race on Wednesday and breezed past the competition to take first place.

In 2023, she pulled off a similar victory at the same event, proving she does not lose her competitive edge even when the stakes are just her son's playground bragging rights.

"They haven't banned me yet so I'm at the line," Fraser-Pryce, who won back-to-back 100m Olympic titles in 2008 and 2012, wrote along with a clip of her win on Instagram.

Fraser-Pryce announced last week she will return to the track in 2025 after her final Olympics ended in bitter disappointment last year in Paris when she missed her 100m semi-final after sustaining an injury in the warm-up.